|Cristina Marquez||Universidad Carlos III of Madrid|
|Marco Gramaglia||Universidad Carlos III of Madrid|
|Albert Banchs||Universidad Carlos III of Madrid and Institute IMDEA Networ|
|Xavier Costa-Perez||NEC Laboratories Europe|
this paper studies network slicing. In this paper, the authors provide a first investigation of trade-of via an empirical study of resource management efifciency in network slicing.
By providing especially tailored instances of a virtual network, network slicing allows for a strong specialization of the ofered services on the same shared infrastructure. Network slicing has profound implications on resource management, as it entails an inherent trade-of between: (i) the need for fully dedicated resources to support service customization, and (ii) the dynamic resource sharing among services to increase resource eficiency and cost-efectiveness of the system. In this paper, we provide a first investigation of this trade-of via an empirical study of resource management efifciency in network slicing. Building on substantial measurement data collected in an operational mobile network (i) we quantify the eficiency gap introduced by non-reconfigurable allocation strategies of diferent kinds of resources, from radio access to the core of the network, and (ii) we quantify the advantages of their dynamic orchestration at diferent timescales. Our results provide insights on the achievable efifciency of network slicing architectures, their dimensioning, and their interplay with resource management algorithms.